Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 200-087-7 | CAS number: 51-28-5
Endpoint summary
Administrative data
Description of key information
Additional information
2,4 -dinitrophenol is a solid organic substance, with yellow colour and sweetish odour. It can be manufacture as platelets, leaflets or crystals
(The Merk Index, 1989).
It has a density of 1.683 g/cm^3 , a vapour pressure of 1.49 x 10 ^-5 mmHg at 18°C (Mabey WR, Smith JH, Podoll RT, et al., 1981), and it is soluble in water (5600 mg/L at 18°C and 2790 at 20°C from Schwarzernbach, RP., et al, 1988).
It shows solubility on different types of solvent (g/100 g solvent): 15.55 in ethyl acetate; 35.90 in acetone, 5.39 in chloroform; 20.05 in pyridine; 0.423 in carbon tetrachloride; 6.36 in toluene; it is soluble in alcohol and benzene (The Merk Index, 1989).
Its melting point is defined in the range of 112 -114°C and the boiling point cannot be defined because it sublimes when carefully heated (The Merk Index, 1989).
The substance in its pasty form, which is the only one marketed, with a water content > 15% is considered not explosive, but as a solid desensitised explosive. For this reason this wetted form permits to suppress its explosive properties (solid desensitised explosive)
2,4 -dinitrophenol has a dissociation constant of 4.09 (temperature not specified) and appear to be stable in acid solution (Pearce PJ, Simkins RJJ., 1968).
Its octanol-water partition coefficient Log Kow is 1.54, that suggest that 2,4 -dinitrophenol has a low ability to bioaccumulation in aquatic organisms.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
